Pivotally movable sliding bracket for drawers or shelves and locking means therefor



Oct. 13, 1953 I s GUSSACK 5 PIVOTALLY MOVABLE SLIDING BRACKET FOR DRAWERS 0R SHELVES AND LOCKING MEANS THEREFOR Filed April 24, 1951 5 Sheet s-Sheet 1 FIG.I.

INVENTOR SEYMOUR. L GUSSACK v ATTORNEY Oct. 13, 1953 s. l. GUSSACK PIVOTALLY MOVABLE 2,655,422 SLIDING BRACKET FOR DRAWERS 0R SHELVES AND LOCKING MEANS THEREFOR Filed April 24, 1951 5 Sheets-Sheet 2 dd; w .8 K. 4 mm I Nm 0 Q 0 c m. 2 01 mm on m m 2 11 w u rr. .1 ww mm 2 v 1 m/ Y a 0 mm 9 @N Oct. 13, 1953 S. l. G S PIVOTALLY MOVABLE U SACK SLIDING BRACKET FOR DRAWERS 0R SHELVES AND LOCKING MEANS THEREFOR Filed April 24, 1951 s Sheets-Sheet s IIiA-lll l wm on 0a. 13, 1953 s. 1. GUS SACK; 2,655,422

PIVOTALLY MOVABLE SLIDING BRACKET FOR DRAWERS OR SHELVES AND LOCKING MEANS THEREFOR so I BY f M 62 ATTORNEY Oct. 13,1953 5 l GUSSACK ,6

PIVOTALLY MOVABLE :SLIDING BRACKET FOR DRAWERS 0R SHELVES AND LOCKING MEANS THEREFOR ATTORNEY Patented Oct. 13, 1953 PIVOTALLY MOVABLE SLIDING BRACKET FOR DKAWERS OR SHELVES AND LOCK.- ING MEANS THEREFOR Seymour 1.. Gussack, Flushing, N. Y., assignor, by mesne assignments, to Grant Pulley & Hard. ware Corporation, Flushing, N. Y., a. corporation at New York Application April 24 1951', SeriaI' No. 222,682

1 Claim. 1

This invention relates to slide brackets and has particular reference to slidable tray supporting brackets especially usable with all typesof. electronic equipment.

One object of this invention is. to provide a slide bracket which may be secured. to the side walls of a cabinet or stand and support upon its sliding elements a chassis carrying electronicinstruments or a tray or drawer in which. a chassis for an electronic instrument may be carried. or supported and permitting the said. chassis tray or drawer to be moved outwardly from the cabinet or stand.

A second object is to provide a supporting slide bracket as above described upon which the said chassis or tray may be pivotally mounted and swung around an angle to expose the bottom. of same to permit easy access to the.- parts of the instrument therein- A- third object'- of this invention is to providea slide bracket as described, in which. the moving parts of the slide bracket may be horizontally moved outwardly from the cabinet and be auto-- mati'cally locked in fixed: outermost position and manually released to retract same from their outermost position.

A. fourth object of this invention the provision, in. the invention described; of automatically actuated locking means to hold. the: parts in. locked. fixed position when the slide elements are: retracted; or moved to closed. position- A. fifth object of this invention. is to include in a slide bracket as described. means for manually and automatically actuating the locking means when sliding the: moving element of the slide bracket. in either forward or retracted direction.

A sixth object of this invention is the provision therein. of means for tilting a chassis or tray pivotally mounted upon. the slide. bracket and means upon the slide bracket coacting. with a locking means upon the said chassis or tray to. I

fix and lock same in a selected angular adjustment with the horizontal axis of the slide bracket and. having manually operated means for releasing the chassis or tray from its tilted position A still further. object of this invention is the provision. of an organization in which the con.- stituent elements. are so arranged structurally and functionally as to assure improved results with materials and members which may be manufactured. at reasonable cost, may be easily assembled and which will be efiici'ent in operation with minimum wear to the parts.

The best embodiment of the invention has been chosen for illustrative purposes, but this embodi- 2. mentshould be viewed as being illustrative only and not as limiting because obviously the inventionis capable oi other embodiments having .re-- vised details of construction. so long as. they fall within theambit of the appended claim.

The invention. itself, however, both as to its organization and its method of operation, will. best be understood from the following description oi a specific embodiment when read in connection with the accompanying drawing, in which;

Fig. l is a perspective view of the upper portion of a cabinet and shows a closed drawer or tray.

Fig. 2 is a side: elevational View of same, but shows the tray or drawer fully drawn. out upon a slide bracket.

Fig. 3 is a similar view, butshcwing the tray or drawer in a tilted. position;

One embodiment oi this invention is illustrated in Fig. 4 which. is an enlarged elevational view of a slide bracket fully extended or drawn out from the cabinet which is partially shown. in section. The dot-dash linesxshow a tray or drawer in nor.- mal horizontal position and the three dot-dash lines. shown the tray tilted to a position at right angles to its first position.

Fig. 5 is a topview of Fig.. 4, but shows the slide bracket partly retracted and a part of one side wall, top: and rear: wali of. a cabinet, to the side wall of. which the slide bracket. is partially attached. A. portion at. a tray or drawer also being. shown in fuli lines;

6 is a similar view but shows: the slide bracket andtray fully retracted.

Fig. '7 is an enlarged fragmentary detail of. a part takenalong line 1--'| of Figs. 5 and.

Fig. 8 is a detail section taken along line 8--8 of'Flg'. 7.

Fig; 9 is an elevational detail view, similar to Fig; 4, but considerably enlarged and showing parts broken away.

Fig. 1.0 is a top or plan. view of Fig. 9.

Fig. 11 is a plan view of a ball bearing spacer used in thisinvention.

Fig. 12 is a longitudinal sectional. view of the ball bearing spacer of Fig. 11 and is taken approximately through itslongitudinal center.

131s a front elevational view of a slide: bracket looking in the direction of: the arrow Y and embraced in. the line LP-L of Fig- 1.4-.

Fig. 14 is an elevational view of. a. part. of: the slide: bracket and is a view looking in the direction of the arrowX of Fig. 13.

Fig. 15- is a side el'evationat view of the front portion of a tray or drawer and shows a lock isleasing mechanism which forms an essential part of this invention.

Fig. 16 is a sectional detail view taken along line iii-it of Fig. 15.

Fig. 17 is a side elevaticnal view showing a sec ond embodiment of this invention and has parts broken away and part or" the tray or drawer outlined by the dot-dash lines.

Fig. 18 is a top or plan view of same.

Fig. 19 is a side elevation of a partially extended slide bracket showing another embodiment of this invention, and

Fig. 2G is a sectional elevation taken along the line 2ii2@ of Fig. 17.

In Figs. 1, 2 and 3 of the drawings, ll designates the top of a cabinet or frame, [2 the near sidewall and IS the far side wall of the cabinet. i l, in general, indicates a slide bracket, a part of which is secured to the inside walls l2 and I3 of the cabinet. A tray or drawer i is pivotally mounted, at It, upon the slide brackets [4. While a single slide bracket is shown in the illustrations and herewith described, it is to be understood that a slide bracket is also partly attached to the far side wall i3 and that the tray i5 is pivotally mounted upon and between both slide brackets.

The slide bracket 14 consists of an outer channel member ll which is suitably secured to the inside of the side wall of the cabinet as shown by the dotted lines in Figs. 2 and 3. Slidably engaging within the channel member i7 is an intermediate channel member 58 and slidably engaging in the intermediate channel member [8 is a center or inner member It. A plate 29, in the form of a quadrant, is attached to the center channel member and is formed with a slotted recess 2| and bearing pocket 22 within which the tray I5 is pivoted. Locking means 23 is pro vided to hold the tray in its manually horizontal position (Fig. 2) or in the tilted position shown in Fig. 3. A further detailed description of the parts so far described now follows, reference being had to Figs. 4 to 16 inclusive.

In Fig. 4, as heretofore stated, the slide bracket members 18 and [9 are fully extended or withdrawn from the cabinet and the tray it: which is mounted upon the center or inner member I9 is fully withdrawn as indicated by the dot-dash lines 24. The outer channel member I! is secured to the side wall l2 by screws 25 (shown only in Fig. 18) which engage through the side wall l2 and into threaded bores 26 in the said outer channel member li. Disposed between the inner surfaces of flanges 21 formed upon the channel member ii and upon the outer surfaces of the flanges 28 formed upon the intermediate channel member i8, are ball bearings 23 which are held in place by spacer members 38. The said ball bearings 29 roll in race-ways 3i and 32 (Fig. 13) formed upon theopposing surfaces of the flanges 27 and 28 upon the outer channel member i1 and the intermediate channel member i8, respectively. A similar series of ball bearings 33 is disposed between the flanges 28 upon the intermediate channel member 18 and the center or inner member l8 and run in race-ways 34 and 35, respectively, upon said intermediate channel member. The ball bearings are similarly held in place by spacers 36.

When not locked against slidin or rolling movement the said inner or center member I9 will roll within the intermediate channel member 18 which in turn will roll within the outer channel member ll. To limit the outward movement of the inner member 18 within the intermediate channel member [8 there are provided stop pins 31 (Fig. 9) secured upon the flanges 28 of the intermediate channel member l8 and which engage the forward end of the spacers 36. The said stop pins 37 and spacers 36 coacting with stop pins 38, secured upon inner member 19 and engaging with the opposite or rearward end of the spacers 3B, limit the outward or forward movement of the inner member l9. Similarly stop pins 39 secured upon the front of flanges 21 of the outer channel member I! coacting with the spacers 30 and stop pins 40 upon the rear end of the intermediate channel member l8, limit the outward movement of the intermediate channel member [8. A spring element 4i removably attached at the rear end of the outer channel member acts as a stop when the slidable parts are completely retracted.

In Figs. 2, 3, 4 and 9 the intermediate channel member l3 and the inner member If! are shown locked and immovable in their outermost position. A locking member 42 pivotally attached at 43 to the outer channel member H is formed at one end with a dog 44 which engages through an orifice 45 in the flange 21 of the said outer channel member ll. A helical spring 46 engages between the opposite end of the locking member 42 and the flange 21 and acts to urge the dog 45 through the said orifice 45 and into a pocket dl formed in the flange 28 upon the intermediate channel member [8 to hold same against movement with respect to the outer channel member ll. The location of the pocket is best illustrated in Fig. 4. A similar pocket 48 is also provided at the forward end of the upper flange 23 of the intermediate channel member la.

The inner member I9 may also be locked against sliding movement at two points. When in its innermost position a locking pin 48' (Figs. 4, 9, 10, 13 and 14) upon the intermediate channel member 18 is adapted to engage a locking cam arm 43 which is attached to the squared shank 5B of a pin 5! in turn extending through the inner member l9 and terminating in a squared shank 52 beyond the inner face of the said inner member. Upon the said squared shank 52, there is attached a cam member 53 which is best shown in Figs. 9, 10 and 13. A movement of the said cam 53, counterclockwise, will raise the locking cam 49 to disengage the lock pin 48'. A spiral spring 54 mounted upon a pin 55 has one free end anchored in an orifice 58 upon the quadrant plate 20 and has its opposite free end 5! in engagement with the cam 53 to urge the locking arm 43 into locking engagement with the lock pin 48. A second lock pin 58, also secured upon the intermediate channel member l3 (see Figs. 4 and 9) near its foremost end, is in engagement with the locking cam arm 49 when the inner member I9 is withdrawn to its outermost position.

The quadrant plate 2!} is secured to the said inner member 29 by means of screws 5E! and is formed, along its arcuate edge, with a flange 8| (Figs. 4, 9, 13 and 14) which flange is notched, upon its inner periphery as at $2 and 63. A tray or drawer l5, hereinabove described, is partly shown in Figs. 5, 6, 10 and 15, and has attached to its side wall 34 (by screws 65) a flat bar 66 upon the innermost end of which there is provided a stud 6'! formed with a contracted portion which has been heretofore designated as the pivot Hi. The said pivot 18 provides the means for 5. pivotally seating the tray in the aforementioned bearingpocket 22 (Figs. 9-, and 14) Mounted in bearing blocks 68, which are at tached to the flat bar 65-, there is a rod 59 adapt ed for slight reciprocal movement within the. bearing blocks 68. One end of the rod 63 cartends through the front panel 10 or the tray I5 (Figs. 1, 2, 3, 5, 6, I0 and and is provided with a knob H. A collar 12 is suitably secured upon the rod 69 and engages against. a washer 1-3 upon the inside of the front panel 10. A heli cal spring 14- encircles. the rod and is disposed between the fixed collar I2 and the bearing block 6'8 near the panel I0. Upon the innermost end of the rod 69 there is provided a pin I5 which will contact the cam 53 when therod i0 is pushed inwardly against the urge of the; spring 14. The movement of the cam 53 will raise the locking end of the locking cam arm as already described. There is also attached to the rod. 89. inclose proximity to the pin 15, a locking block. 16 which is immovably secured upon the said rod. Normally the said locking block I6 is positioned in a notched out space H, at the base of the arcuate flange fil (Figs. 3, 4 and 9) By a slight pushing movement of the rod 69 this block 16. may be moved clear of the notched space 'I! allowing the tray I5 to be tilted to a right angular position, as shown in Fig. 3. The locking. block T5 will then engage the notch 63 and lock the tray in its tilted position- Obviously, a slight downward pushing movement of the rod 69 will disengage the locking block 16 from notch. 63 and allow the tray to be. restored. to. its normal horizontal position. The notch 62 permits a angular adjustment.

When it is desired to retract. the tray I5 or push same into its normal position in they cabinet, the push rod is moved inwardly to bring the pin 15 into contact. with the. cam 53. A continued pushing movement. will turn the cam 53 counterclockwise and release the locking cam arm 49' from the locking pin 58 and allow the inner member to roll rearwardly until the locking cam arm 42 engages the inner locking pin 48. At this point a cam I8, upon the; arcuate plate) 20 (Figs. 5-, 13 and 1.4),. will. align, with and contact a pin 13 and raise the: dog: 44 on lock. member 42 to lift saiddog clear or the pocket 41,, thus allowing a further rearward movement of the tray I 5. When the tray has reached its innermost position the dog 44, which has been riding upon the upper surface of the flange 2B, wilt again drop into a pocket 43. thereby locking. the tray in closed or fully retracted position.

The bottom of the tray I5 comprises removable panels 80 which are attached to angular membersv 8| by means of screws 82. The said angular members 8| are secured along the lower inside edge of the side, rear members and the front panel ID of the tray. The angular members 0 I form a ledge upon which a chassis (not shown) carrying various electronic units and hookups may be mounted. When it becomes necessary to make repairs, replacement of parts, adjustment or inspection, the tray may be withdrawn from the cabinet, tilted and locked in tilted position and the bottom panels removed thus exposing and making the parts readily accessible.

To unlock the tray, preliminary to withdrawing same, the push rod is manually pushed inwardly to actuate the cam 53 and disengage the locking cam arm 49 from the pin 50. The inner member I9 may then be drawn out bringing the cam I8 upon the plate 20, into engagement with the pin the pocket 41 thus freeing the intermediate. chan nel member I8 and allowing the tray M5 to be withdrawn to its outermost position.

In the embodiment shown in Figs. 17, 18 and 20. the outer member consists of a plate lII' having a centrally aligned rib I21 which isformed' with race-ways I3I longitudinally running along the upper and lower surface of the said rib I21. An intermediate channel member II8- engages around the said rib I21 and has upper and lower flanges I28 upon which are raceways I32: opposed to the raceways I3I upon the rib I21. Disposed between said raceways I32 and I3I are ball bearing units I29. An inner channel member II9 engages around the intermediate channel meme ber H8 and has upper and lower flanges I'III upon which there are raceways I35 which are. opposed to raceways I34 upon the intermediate channel member H8 and in which ball bearings I 33 run. The outer member I Ill is. provided with screw orifices I26 for attaching same to the side wall or a cabinet.

A locking arm I42 is pivotally mounted. upon.

I the outermember II'I at I43 and has a. hook formation I44 at its free end which is adapted; to engage over the rear end of the. intermediate member H8. A helical spring [45 encircles the pivoting pin I43 and is anchored at one end to a pin I46 while its opposite end engages over the locking arm I42 to urge the hook end I44 over the edge of the intermediate member 8. A. stop screw I50 at the rear end of the rib. I2;I. is engageable with a cutout I51 and limits the movement rearward-1y of the intermediate channel member H8, when in its forwardly extended position. A cutout I52 at the forward end of the intermediate channel member is engageable with a stop screw I53 upon the inner channel member H9 to limit its rearward movement. when fully retracted.

An upstanding plate member I20 having a semi-circular upper edge I2I is. secured, by means: of a screw I22, to an upright. supporting member I23 which is formed with a base I24 and secured to the upper edge of the inner channel member II9 by means of screws I30. The upright: supporting member I23 is formed with a pocket I23 which provides the. means for receiving the sup:- porting pivot. of the aforementioned tray or drawer. Around the semi-circular periphery oi the plate I20 at spaced intervals are shallow notches I24, I26 and deep notches I 25?. The radial lines of the two deeper notches IZd are in ahorizontal straight angle, the. notch I26 is ra dially at. an angle of to same while the notch. I24 is radially arranged at 45 to the radial line. of the other notches- An L shaped lever formed with legs I36 and I31 is. pivotally attached, at I38 to. the plate I20: and has a lateral projecting end I38. which: extends into one. of the deep notches I25. To the leg I33. there is pivotally attached, at I38, a. lock pin I40 which engages. through an: orifice M'I formed in the base I24, and. flange I528 of the inner channel member H3 and contacts the foremost end of the intermediate channel member H8. Thus, it will be noted, the two locking units I42 and I40 will hold, immovable, the fully extended or withdrawn members and prevent the accidental closing of the tray which is pivotally carried upon the inner channel member H9. The relative position of the unlocking rod I69 is shown by the dot-dash lines wherein the pin 15 of the first embodiment shown and described, is omitted. The inner end of the shaft (Fig. 17) engages the lowermost and deeper notch I25 of the plate I20 and normally maintains this position in the slot to lock the tray against tilting movement. However, by pulling out the knob Ill and shaft I69, the end of the said shaft may be pulled cl ar of the notch I25 and the tray swung upwardly to the uppermost notch I26 and when the knob III is released, the spring I14 will urge the rods end into the notch I26 and lock the tray in a vertical position, or by allowing the rod end to enter the notch 25, the tray may be held at an angle of 45.

To close or retract the tray and the operative parts, with the tray in its normally lowered or horizontal position, the rod I69 is pushed inwardly to engage the laterally projecting end I38 of the L-shaped lever arm I31 thereby raising the lock pin I49 to clear the end of the intermediate channel member I I8 and allow the inner channel member I19 to move rearwardly. When the rear end of said member lI9 reaches the locking arm I42 it will pass under the said locking arm and lift same to allow the inner channel member H9 to pass. It will be noted that a shoulder I12 upon the shaft I69 and against which the spring engages is positioned in juxtaposition to the inner end of the spring I14, instead of as shown in the first embodiment.

The embodiment shown in Fig. 19 is similar with respect to the outer member III and the intermediate and inner channel members H8 and H9 respectively, and the locking means I42. The means for tilting the tra shown in the embodiments first mentioned, is omitted in this latter embodiment wherein the inner channel member IE6 is suitably secured directly to the side wall of the tray. Further the locking means shown upon the inner channel member comprises the pin I40 which is pivotally attached to one end of a finger operated arm I50 which is pivotally mounted as at IBI, to the member H9 and has a button IE2 at its free end. A helical spring I63 is disposed between the arm I60 and the inner channel member II9 to urge the pin I iII into locking position.

A hooked stop member I80 (Figs. 17 and 18) is attached to the panel I10, by means of screws HM and flange plate I82 and engages a pin I83. This feature provides a rest for the front end of the tray while same is in its horizontal position.

The above description has included a tray or drawer I which may be pivotally mounted upon the inner sliding member I9. The said drawer or tray, however, may be dispensed with and a bottomless chassis 64' (Fig. may be mounted directly upon the sliding member I5 in which case the flat bar 89 is secured to the side wall of the chassis and to the front panel Ill. The said bottomless chassis when tilted to a vertical position gives ready access to the electronic elements and connections mounted in same.

In Figs. 9 and 10 a variation of the locking and unlocking means is shown. In this form, the unlocking of the tilting of the tray or chassis is accomplished by an outward or pulling movement of the rod 69 pulling the locking block I6 outwardly beyond the periphery of the flange GI, Block I6 rides along the outer periphery to engage the slots 62 or 63' (see Fig. 9) which slots are substituted for the inner notches BI and 63 already described. To permit this outward action or pull of the rod 69, the collar I2 is moved along the rod 66 as indicated in Fig. 10 making a space between it and the washer I3, for a spring I4 of slightly less urging power than the spring I4. The said spring 14 urges the rod outwardly but not far enough to disengage the locking block I6, maintaining it normally locked in the cut out slot 11. The outward pull of the rod 66 will pull the block free but when the pull is released the spring I4 will urge and hold the block I6 in locked position. To unlock the sliding members the rod is pushed inwardly as already described.

I claim:

In a cabinet for slidably and pivotally supporting a drawer and chassis for carrying electronic units, the combination comprising side walls in said cabinet, stationary outer channeled members fixed to said side walls of said cabinet, intermediate channeled members slidable within said stationary channeled members, central inner members slidable within said intermediate channeled members, a drawer mounted on and between said inner members, locking means pivotally attached to the said stationary channeled members, said locking means comprising lever members pivotally mounted upon said outer channeled members and having depending dogs engageable through orifices in the upper flanges of said outer channeled members and through orifices in the upper flanges of said intermediate channeled members, spring elements engageable between one end of the said pivotal locking means and the upper flanges of said stationary member to urge said depending dogs through and into said orifices upon the said outer stationary channeled members and intermediate channeled members, cams upon the said slidable inner central members engageable with a pin upon the said locking member to release same when the said drawer is in closed position.

SEYMOUR I. GUSSACK.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,092,270 Kurtz Apr. 7, 1914 1,175,801 Northall Mar. 14, 1916 1,321,167 Voigt Nov. 11, 1919 1,566,307 Card Dec. 22, 1925 1,944,687 Henderson Jan. 23, 1934 2,245,526 Fox June 10, 1941 2,486,764 Singer Nov. 1, 1949 2,510,681 Campbell June 6, 1950 2,566,064 Keim Aug. 28, 1951 

